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(Mode1.)

W. B. & J. 1). MAOK.

INJECTOR.

Patented Aug. 1, 1882.

Witnesses.- (3J a fnuercars: doL. 7 73 M UNITED STATES PATENT OFFICE.

WILLIAM B. MACK AND JOHN D. MAcK, or BOSTON, MASSACHUSETTS; SAID JOHN D.MACK ASSIGNOR TO SAID WILLIAM B. MACK.

INJECTOR.

SPECIFICATION forming part of Letters Patent No. 262,070, dated August1, 1882.

Application filed May 8, 1882. (ModeL) To all whom at may concern Be itknown that we, WILLIAM B. MACK and JOHN D. MACK, both of Boston, in thecounty of Suffolk and Stateof 1\Iassachusetts,have invented certainImprovements in Injectors, of

which the following is a specification.

This invention has for its object,'first, to pro-' To thesecnds ourinvention consists in theimprovements which we will now proceed to.describe and claim.

Of the accompanying drawings, forming a part of this specification,Figure 1 represents a longitudinal section ofan injector embodying ourimprovements. Figs. 2 and 3 represent side elevations of the parts ofthe casing disconnected. showing the old construction.

The same letters of reference indicate the same parts in all thefigures.

In the drawings, A and D represent the two sections which compose theprincipal portion of the casing of the injector, the section A having abranch, A, for the connection of a steampipe, and the section D abranch, D, for the connection of a water-pipe.

B represents the steam-cone, which is se-. cured into the section A, andhas an outwardly-projecting flange, G, on which the section A bears. Oneside of said flange is beveled or curved to form a bearing resting, whenthe steam-cone is in place, on a seat, D on the end of the section D.The steam-cone is provided with a smooth surface, B, at the inner orunder side of the flange O, and the section D is provided with a smoothbore adapted to receive the smooth portion B, so that the section D canslide freely on and off the cone B.

Fig. 4. represents a section- E represents acoupling-nut, which isscrewed upon the end of the section D, and has an inwardly-projectingflange, E, projecting over and bearin g upon the rear or upper surfaceof the flange (J of the steam-cone. lt will be seen that when the nutEisscrewed home its flange IE will force the flange of the steam-conefirmly against the seat D, and thus connect the sections A D, while byunscrewing said not the sections will be disconnected.

Heretofore the steam-cone has been threaded on both sides of the flange0, instead of having the smooth portion B, and the sections A D haveboth been screwed directly to the cone, as shown in Fig. 4, no flangednut E being employed. This last-described construction is objectionablefor the following reasons: In screwing the parts together it issometimes difficult to bring the steam-cone to the exact longitudinalposition required with relation to the combining-cone F, and at the sametime secure the proper relative positions of the branches A D, it beingessential that said branches occupy certain fixed relative positions, tosecure which it is sometimes necessary to turn one or the other afterthey have been screwed to the steanrcone. By such turning motion of onesection or the other the longitudinal position of the steam-cone withreference to theeombining-coneisliable to be slightly changed, so as tosomewhat impair the operation of the injector, and the flange of thesteam-cone is liable to be slightly separated from its bearing on theend of one section or the other, so as to cause breakage of steam. Itoften results therefore that the parts have to be disconnected and thethreats recnt, or that other operations requiring skilled labor have tobe performed before the positionsof the parts can be properly adjustedand the necessary conditions fulfilled. These difficulties are whollyovercome by our above-described improvements.

The connection afforded by the flanged nut E and the freedom of movementafforded by the smooth portion B of the steam-cone enable the sections AD to be turned independently of each other without in any way affectingthe relation of the steam-cone to the combining-cone or separating theflange G from its bearings. The nut E can be unscrewed and the sectionsA D disconnected without removing the section A from the steam-pipe.Repairs or renewal of inside parts can be effected without disturbingthe steam -conneetions. The new line-combining cone F has a flange, F,at its inner end bearing on a seat, I, in the easing D. The lower end,F, of the cone F is reduced in diameter and externally threaded.

J represents the delivery-cone, which has a flange, J, at its outer endbearing on a seat, K, in the section I). The outer end of the de-1ivery-cone projects outside of the casing, and is formed on itsprojecting end to receive a wrench, and is internally threaded at itsoppo site end to engage with the externally-threaded end F of thecombining-cone. The deliverycone J is adapted to rotate freely in theeasing, but the colnbining'coneis prevented from rotating by anysuitable means, preferably by a projection, I, on the casing entering alongitudinal slot, It, in the exterior of the coinbining-cone, or bymaking the cone and the casing square or of equivalent shape at a point,P, near the outer end. It will be seen therefore that by rotating thedelivery-cone in one direction or the other the combining-cone will bedrawn firmly to place or released, so that it can be removed. By thisconstruction we are enabled to readily apply and remove thecombining-cone, so that when it is worn another can be inserted. Theabsence of screwthreads directly connecting the combiningcone and casingand the provision of the seat I and flange I insure the properlongitudinal position of the combining-cone, so that there is nopossibility of its being wrongly adjusted, as there would be if thecombining-cone were screwed directly to the casing.

It will be observed that the combining-cone and the delivery-cone areboth drawn to their seats simultaneously when the delivery-cone isscrewed into the combining-cone. The provision of the nut orwrench-receiving end of the delivery-cone enables the combining-cone tobe detached without applying a key or wrench to theinner end of thecombining-cone, and thus injuring or indenting the same.

The improved injector is identical in the proportions andrelativearrangements of its parts with the injector shown in Letters Patent toV. B. Mack, dated May 9, 1876, No. 177,313.

We claiml. In an injector, the combination of the easing-sections A D,the steam-cone screwed to the section A, adapted to move freely into andout of the other section, and having a flange interposed between the twosections, and a flanged coupling-nut screwed to the section D andbearing upon the flange of the steam-cone outside of the section A, asset forth.

2. The combination of the section D, the combining-cone resting on aseat in said section, and having a device for preventing rotation, andthe delivery-cone bearing on a seat in the section D, formed to receivea wrench at its projecting end, and internally threaded atits inner endto engage with an externally-thread ed portion of the proximate end ofthe combining-cone, whereby both the combining and delivery cones aredrawn simultaneously to their seats, as set forth.

In testimony whereof we have signed our names to this specification, inthe presence of two subscribing witnesses, this 5th day of May, 1882.

WILLIAM B. MACK. JOHN D. MACK. Witnesses:

(J. F. BROWN, A. L. \VI-II'IE.

